MATH MINDED: Percent Difference replicate data Last week you applied a percent difference by comparing an experimental value to a reference value. The reference value is considered correct. There is another application when comparing replicate data. However, which value is put in the denominator when there is not a value considered correct? When replicate data is gathered under the same conditions, the average is used to calculate % difference. At Comparing multiple data points. No reference value present. This is always a positive value. Less than
5%error is great.
( greatest - least )/( average )\times 100Replicate data: What is the percent difference of data set that includes 2.97,3.07 and
3.11?What about 12.97, 13.07 and 13.11? If the reference value for 12 is 13.41 , what is the
%difference? The experimental value would be the average: